122
U601
Pin
12
HIGH
l OW
OSOI
OFF
ON
0514
OFF
ON
HIGH
[BASE
lOW
OSIS
COLLECTOR
HIGH
lOW
0518
OFF
ON
HEAD 8ASE
SOLENOID
OFF
OS02
ON
OFF
0508
ON
OFF
0509
ON
HIGit
[BASE
lOW
0511
HIGH
COLLECTOR
lOW
OFF
0510
O'
PINCH
ROLLER
SOLENOID
II
I \
lJ
I (
h
;(
\
I \
'"
\
[\ (
+39V
+24V
+9V
OV
\
\
/
/
I~
(
~
1
(
(
'-
il
(X
I)
+24V
+9V
ov
Approl.
Apprat
.
400mSIC
IOOmSec;
STO
P
DELAY
PLAY
Fig. 3-8 Timing diagram
of
solenoid
operation
(in repro-
duce
model
\
3-4. REEL
MOTOR
DRIVE
CIRCUIT
3-4-1
Direction
of
motor
rotation
The
reel
motor
drives the
left
or
right
reel disk
to
take
up
the tape.
Torque
is
transmitted
from
the reel
motor
to
one
of
the reel disks
during
the reproduce, fast-forward, and rewind modes
by
the
processes shown in Fig. 3-9 -
3-11
(as
seen
from
the
front
of
the deck). As
seen
from
Fig. 3-9 and 3-11, the reel
motor
rotates in the
same
direction
during
the reproduce and rewind
modes and
the
fast-forward
pulley
mechanically
selects
either
the
left
or
right
reel disk and drives
it
in
accordance
with
the
direction
of
reel
motor
rotation.
In the
pause
mode, the reel
motor
does
not
rotate.
MOTOR
PULLEY
---i'----i"4
RIGHT-HAND
REEL
DISK
Fig. 3-9 Reel disk drive (reproduce mode)
INTERMEDIATE
PULLEY
RIGHT-HAND
REEL
DISK
REEL
MOTOR
Fig.
3-10
Reel disk drive (fast-forward
model
REEL
MOTOR
INTERMEDIATE
PULLEY
Fig. 3-11 Reel disk drive (rewind
model
15
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